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Vow of 700 Years (700年の悲願, 700-Nen no higan?) is the one-hundred-fiftieth chapter of The Promised Neverland manga.
The blood war and fight between the Royals and the Geelan Clan comes to an end, in which Geelan and his clan are killed off by Queen Legravalima. Afterward, Zazie arrives to join the fight.